Abstract Untethered soft fiber actuators are advancing toward next‐generation artificial muscles, with rotating polymer fibers allowing controlled rotational deformations and contractions accompanied by torque longitudinal forces. Current approaches, however, based either on non‐recyclable non‐reprogrammable thermosets, exhibit torques inadequate actuation performance, or involve intricate multistep processing photopolymerization impeding scalable fabrication manufacturing of...

Interfacial rheology is crucial in dictating morphology and ultimate properties of particle-stabilized polymer blends, but challenging to be determined. In this study, a fully polymeric dumbbell-shaped Janus nanoparticle (JNP) polymethyl methacrylate (PMMA) polystyrene (PS) spheres with equal sizes (∼80 nm) was prepared used as an efficient compatibilizer for PMMA/PS blends. The JNPs were preferentially localized at the interface, thereby reducing interfacial tension refining both...

Construction with cementitious materials via 3D printing requires a highly thixotropic behavior, which is challenge for construction industry. In this work facile and low-cost gelatin-modified thermal responsive smart cement paste formulation was developed extrusion-based in cold environments The paste's temperature-dependent rheological properties were characterised, the underlying mechanism explored. At room temperature, modified presents similar as reference paste. After resting 10 min at...

Abstract The next generation of soft electronics will expand to the third dimension. This require integration mechanically compliant 3D functional structures with stretchable materials. Here, omnidirectional direct ink writing (DIW) poly(3,4‐ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) aerogels tunable electrical and mechanical performance is demonstrated, which can be integrated substrates. Several PEDOT:PSS hydrogels are formulated for DIW freeze‐dried directly on substrates...

The bulk dynamics of immiscible polymer blends during flow is relatively well understood, especially when the system contains Newtonian components. Recently, a number studies have focused on in confined geometries. In that case, morphology development not only affected by material characteristics and type flow, but also degree confinement. Here, we present an overview two-phase shear flow. Firstly, focus typical microstructures are observed dilute blends. Secondly, order to understand those...

In this study, the effect of different process conditions on material properties a single UV-cured layer methacrylate resin, typically used in stereolithography (SLA) process, is assessed. This simplified approach SLA gives opportunity to study link between and mechanical without complicated interactions layers. Fourier-transform infrared analysis performed light intensity, curing time, initiator concentration monomer conversion. A model developed based reaction kinetics photopolymerization...

The effect of the reduction method to prepare reduced graphene oxide (rGO) on melt linear viscoelastic properties, electrical conductivity, polymer matrix crystalline behavior and dielectric properties PEO-rGO nanocomposites was investigated. Reduction performed chemically with either sodium borohydride (NaBH₄) or hydrazine monohydrate (N₂H₄·H₂O) both agents consecutively as well thermally at 1000 °C. different methods resulted in exfoliated rGO sheets types amounts remaining functional...

The microstructure of products manufactured by selective laser sintering (SLS) is known to be highly dependent on various process and material parameters. latter thus also affect the final part properties. While most work has focused ex-situ characterization printed parts, little about time-dependent development during sintering. In this work, we present direct observations microstructural evolution polyamide 12 (PA12) particle doublets in-situ synchrotron wide angle X-ray diffraction...

Abstract Having external control over fundamental properties of polymers, such as their physical state, is a crucial yet challenging design criterion for smart materials. Liquifying polymers through photochemical events has significantly advanced various research lines. However, the opposite process solidifying polymer that intrinsically in liquid state reversibly with light unattained. Herein, light‐controlled liquid‐to‐solid transition polysiloxanes reported, which are decorated small...

Treatment of chronic wounds is challenging, and the development different formulations based on insulin has shown efficacy due to their ability regulate oxidative stress inflammatory reactions. The formulation with polysaccharides in biohybrid hydrogel systems advantage synergistically combining bioactivity protein biocompatibility properties polysaccharides. In this study, a containing insulin, chitosan, hydroxypropyl methyl cellulose (Chi/HPMC/Ins) was prepared characterized by FTIR,...

The effect of confinement on the coalescence Newtonian (polydimethylsiloxane) droplets in a (polyisobutylene) matrix is investigated experimentally. A counter rotating parallel plate device, equipped with microscopy setup, used to visualize two interacting during shear flow. ratio droplet-to-matrix viscosity kept constant at 1.1. Droplet collisions are studied for range droplet sizes, both bulk conditions and gap spacings that comparable size. As result, we present first quantitative...

Synthetic supramolecular polymers and hydrogels in water are emerging as promising biomaterials due to their modularity intrinsic dynamics. Here, we introduce temperature sensitivity into the nonfunctionalized benzene-1,3,5-tricarboxamide (

Focal adhesions (FAs) are mechanosensitive structures that mediate force transmission between cells and the extracellular matrix. While Traction Force Microscopy (TFM) quantifies cellular tractions exerted on deformable substrates, Forster Resonance Energy Transfer (FRET)-based tension probes, such as Vinculin Tension Sensors (VinTS), measure molecular-scale forces within FA proteins. Despite their potential synergy, these methods have rarely been combined to explore interplay molecular...

Among various biorenewable polymers, poly(2,5-ethylene furandicarboxylate) (PEF) has a large potential to replace fossil-based poly(ethylene terephthalate) (PET) for different applications. However, despite showing better gas barrier properties compared PET, the inferior mechanical of PEF hinder its This study reports toughening with linear low-density polyethylene (PE) via melt blending by reactive compatibilization at polymer-polymer interface and benchmarking against similar PET/PE...

In this study, we experimentally investigate the fiber orientation kinetics and rheology of fiber-filled polymer melts in shear flow. A novel setup is designed with custom-built bottom top geometries that are mounted on a conventional rotational rheometer. Shear flow between parallel sliding plates applied by vertical movement geometry. The axial force measurement data rheometer used to determine stress growth coefficient. measured situ using small angle light scattering. We consider...